xref: /freebsd/contrib/llvm-project/clang/lib/Headers/avx512vlbf16intrin.h (revision e32fecd0c2c3ee37c47ee100f169e7eb0282a873)
1 /*===--------- avx512vlbf16intrin.h - AVX512_BF16 intrinsics ---------------===
2  *
3  * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4  * See https://llvm.org/LICENSE.txt for license information.
5  * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6  *
7  *===-----------------------------------------------------------------------===
8  */
9 #ifndef __IMMINTRIN_H
10 #error "Never use <avx512vlbf16intrin.h> directly; include <immintrin.h> instead."
11 #endif
12 
13 #ifndef __AVX512VLBF16INTRIN_H
14 #define __AVX512VLBF16INTRIN_H
15 
16 typedef short __m128bh __attribute__((__vector_size__(16), __aligned__(16)));
17 
18 #define __DEFAULT_FN_ATTRS128 \
19   __attribute__((__always_inline__, __nodebug__, \
20                  __target__("avx512vl, avx512bf16"), __min_vector_width__(128)))
21 #define __DEFAULT_FN_ATTRS256 \
22   __attribute__((__always_inline__, __nodebug__, \
23                  __target__("avx512vl, avx512bf16"), __min_vector_width__(256)))
24 
25 /// Convert Two Packed Single Data to One Packed BF16 Data.
26 ///
27 /// \headerfile <x86intrin.h>
28 ///
29 /// This intrinsic corresponds to the <c> VCVTNE2PS2BF16 </c> instructions.
30 ///
31 /// \param __A
32 ///    A 128-bit vector of [4 x float].
33 /// \param __B
34 ///    A 128-bit vector of [4 x float].
35 /// \returns A 128-bit vector of [8 x bfloat] whose lower 64 bits come from
36 ///    conversion of __B, and higher 64 bits come from conversion of __A.
37 static __inline__ __m128bh __DEFAULT_FN_ATTRS128
38 _mm_cvtne2ps_pbh(__m128 __A, __m128 __B) {
39   return (__m128bh)__builtin_ia32_cvtne2ps2bf16_128((__v4sf) __A,
40                                                     (__v4sf) __B);
41 }
42 
43 /// Convert Two Packed Single Data to One Packed BF16 Data.
44 ///
45 /// \headerfile <x86intrin.h>
46 ///
47 /// This intrinsic corresponds to the <c> VCVTNE2PS2BF16 </c> instructions.
48 ///
49 /// \param __A
50 ///    A 128-bit vector of [4 x float].
51 /// \param __B
52 ///    A 128-bit vector of [4 x float].
53 /// \param __W
54 ///    A 128-bit vector of [8 x bfloat].
55 /// \param __U
56 ///    A 8-bit mask value specifying what is chosen for each element.
57 ///    A 1 means conversion of __A or __B. A 0 means element from __W.
58 /// \returns A 128-bit vector of [8 x bfloat] whose lower 64 bits come from
59 ///    conversion of __B, and higher 64 bits come from conversion of __A.
60 static __inline__ __m128bh __DEFAULT_FN_ATTRS128
61 _mm_mask_cvtne2ps_pbh(__m128bh __W, __mmask8 __U, __m128 __A, __m128 __B) {
62   return (__m128bh)__builtin_ia32_selectw_128((__mmask8)__U,
63                                              (__v8hi)_mm_cvtne2ps_pbh(__A, __B),
64                                              (__v8hi)__W);
65 }
66 
67 /// Convert Two Packed Single Data to One Packed BF16 Data.
68 ///
69 /// \headerfile <x86intrin.h>
70 ///
71 /// This intrinsic corresponds to the <c> VCVTNE2PS2BF16 </c> instructions.
72 ///
73 /// \param __A
74 ///    A 128-bit vector of [4 x float].
75 /// \param __B
76 ///    A 128-bit vector of [4 x float].
77 /// \param __U
78 ///    A 8-bit mask value specifying what is chosen for each element.
79 ///    A 1 means conversion of __A or __B. A 0 means element is zero.
80 /// \returns A 128-bit vector of [8 x bfloat] whose lower 64 bits come from
81 ///    conversion of __B, and higher 64 bits come from conversion of __A.
82 static __inline__ __m128bh __DEFAULT_FN_ATTRS128
83 _mm_maskz_cvtne2ps_pbh(__mmask8 __U, __m128 __A, __m128 __B) {
84   return (__m128bh)__builtin_ia32_selectw_128((__mmask8)__U,
85                                              (__v8hi)_mm_cvtne2ps_pbh(__A, __B),
86                                              (__v8hi)_mm_setzero_si128());
87 }
88 
89 /// Convert Two Packed Single Data to One Packed BF16 Data.
90 ///
91 /// \headerfile <x86intrin.h>
92 ///
93 /// This intrinsic corresponds to the <c> VCVTNE2PS2BF16 </c> instructions.
94 ///
95 /// \param __A
96 ///    A 256-bit vector of [8 x float].
97 /// \param __B
98 ///    A 256-bit vector of [8 x float].
99 /// \returns A 256-bit vector of [16 x bfloat] whose lower 128 bits come from
100 ///    conversion of __B, and higher 128 bits come from conversion of __A.
101 static __inline__ __m256bh __DEFAULT_FN_ATTRS256
102 _mm256_cvtne2ps_pbh(__m256 __A, __m256 __B) {
103   return (__m256bh)__builtin_ia32_cvtne2ps2bf16_256((__v8sf) __A,
104                                                     (__v8sf) __B);
105 }
106 
107 /// Convert Two Packed Single Data to One Packed BF16 Data.
108 ///
109 /// \headerfile <x86intrin.h>
110 ///
111 /// This intrinsic corresponds to the <c> VCVTNE2PS2BF16 </c> instructions.
112 ///
113 /// \param __A
114 ///    A 256-bit vector of [8 x float].
115 /// \param __B
116 ///    A 256-bit vector of [8 x float].
117 /// \param __W
118 ///    A 256-bit vector of [16 x bfloat].
119 /// \param __U
120 ///    A 16-bit mask value specifying what is chosen for each element.
121 ///    A 1 means conversion of __A or __B. A 0 means element from __W.
122 /// \returns A 256-bit vector of [16 x bfloat] whose lower 128 bits come from
123 ///    conversion of __B, and higher 128 bits come from conversion of __A.
124 static __inline__ __m256bh __DEFAULT_FN_ATTRS256
125 _mm256_mask_cvtne2ps_pbh(__m256bh __W, __mmask16 __U, __m256 __A, __m256 __B) {
126   return (__m256bh)__builtin_ia32_selectw_256((__mmask16)__U,
127                                          (__v16hi)_mm256_cvtne2ps_pbh(__A, __B),
128                                          (__v16hi)__W);
129 }
130 
131 /// Convert Two Packed Single Data to One Packed BF16 Data.
132 ///
133 /// \headerfile <x86intrin.h>
134 ///
135 /// This intrinsic corresponds to the <c> VCVTNE2PS2BF16 </c> instructions.
136 ///
137 /// \param __A
138 ///    A 256-bit vector of [8 x float].
139 /// \param __B
140 ///    A 256-bit vector of [8 x float].
141 /// \param __U
142 ///    A 16-bit mask value specifying what is chosen for each element.
143 ///    A 1 means conversion of __A or __B. A 0 means element is zero.
144 /// \returns A 256-bit vector of [16 x bfloat] whose lower 128 bits come from
145 ///    conversion of __B, and higher 128 bits come from conversion of __A.
146 static __inline__ __m256bh __DEFAULT_FN_ATTRS256
147 _mm256_maskz_cvtne2ps_pbh(__mmask16 __U, __m256 __A, __m256 __B) {
148   return (__m256bh)__builtin_ia32_selectw_256((__mmask16)__U,
149                                          (__v16hi)_mm256_cvtne2ps_pbh(__A, __B),
150                                          (__v16hi)_mm256_setzero_si256());
151 }
152 
153 /// Convert Packed Single Data to Packed BF16 Data.
154 ///
155 /// \headerfile <x86intrin.h>
156 ///
157 /// This intrinsic corresponds to the <c> VCVTNEPS2BF16 </c> instructions.
158 ///
159 /// \param __A
160 ///    A 128-bit vector of [4 x float].
161 /// \returns A 128-bit vector of [8 x bfloat] whose lower 64 bits come from
162 ///    conversion of __A, and higher 64 bits are 0.
163 static __inline__ __m128bh __DEFAULT_FN_ATTRS128
164 _mm_cvtneps_pbh(__m128 __A) {
165   return (__m128bh)__builtin_ia32_cvtneps2bf16_128_mask((__v4sf) __A,
166                                                   (__v8hi)_mm_undefined_si128(),
167                                                   (__mmask8)-1);
168 }
169 
170 /// Convert Packed Single Data to Packed BF16 Data.
171 ///
172 /// \headerfile <x86intrin.h>
173 ///
174 /// This intrinsic corresponds to the <c> VCVTNEPS2BF16 </c> instructions.
175 ///
176 /// \param __A
177 ///    A 128-bit vector of [4 x float].
178 /// \param __W
179 ///    A 128-bit vector of [8 x bfloat].
180 /// \param __U
181 ///    A 4-bit mask value specifying what is chosen for each element.
182 ///    A 1 means conversion of __A. A 0 means element from __W.
183 /// \returns A 128-bit vector of [8 x bfloat] whose lower 64 bits come from
184 ///    conversion of __A, and higher 64 bits are 0.
185 static __inline__ __m128bh __DEFAULT_FN_ATTRS128
186 _mm_mask_cvtneps_pbh(__m128bh __W, __mmask8 __U, __m128 __A) {
187   return (__m128bh)__builtin_ia32_cvtneps2bf16_128_mask((__v4sf) __A,
188                                                         (__v8hi)__W,
189                                                         (__mmask8)__U);
190 }
191 
192 /// Convert Packed Single Data to Packed BF16 Data.
193 ///
194 /// \headerfile <x86intrin.h>
195 ///
196 /// This intrinsic corresponds to the <c> VCVTNEPS2BF16 </c> instructions.
197 ///
198 /// \param __A
199 ///    A 128-bit vector of [4 x float].
200 /// \param __U
201 ///    A 4-bit mask value specifying what is chosen for each element.
202 ///    A 1 means conversion of __A. A 0 means element is zero.
203 /// \returns A 128-bit vector of [8 x bfloat] whose lower 64 bits come from
204 ///    conversion of __A, and higher 64 bits are 0.
205 static __inline__ __m128bh __DEFAULT_FN_ATTRS128
206 _mm_maskz_cvtneps_pbh(__mmask8 __U, __m128 __A) {
207   return (__m128bh)__builtin_ia32_cvtneps2bf16_128_mask((__v4sf) __A,
208                                                     (__v8hi)_mm_setzero_si128(),
209                                                     (__mmask8)__U);
210 }
211 
212 /// Convert Packed Single Data to Packed BF16 Data.
213 ///
214 /// \headerfile <x86intrin.h>
215 ///
216 /// This intrinsic corresponds to the <c> VCVTNEPS2BF16 </c> instructions.
217 ///
218 /// \param __A
219 ///    A 256-bit vector of [8 x float].
220 /// \returns A 128-bit vector of [8 x bfloat] comes from conversion of __A.
221 static __inline__ __m128bh __DEFAULT_FN_ATTRS256
222 _mm256_cvtneps_pbh(__m256 __A) {
223   return (__m128bh)__builtin_ia32_cvtneps2bf16_256_mask((__v8sf)__A,
224                                                   (__v8hi)_mm_undefined_si128(),
225                                                   (__mmask8)-1);
226 }
227 
228 /// Convert Packed Single Data to Packed BF16 Data.
229 ///
230 /// \headerfile <x86intrin.h>
231 ///
232 /// This intrinsic corresponds to the <c> VCVTNEPS2BF16 </c> instructions.
233 ///
234 /// \param __A
235 ///    A 256-bit vector of [8 x float].
236 /// \param __W
237 ///    A 256-bit vector of [8 x bfloat].
238 /// \param __U
239 ///    A 8-bit mask value specifying what is chosen for each element.
240 ///    A 1 means conversion of __A. A 0 means element from __W.
241 /// \returns A 128-bit vector of [8 x bfloat] comes from conversion of __A.
242 static __inline__ __m128bh __DEFAULT_FN_ATTRS256
243 _mm256_mask_cvtneps_pbh(__m128bh __W, __mmask8 __U, __m256 __A) {
244   return (__m128bh)__builtin_ia32_cvtneps2bf16_256_mask((__v8sf)__A,
245                                                         (__v8hi)__W,
246                                                         (__mmask8)__U);
247 }
248 
249 /// Convert Packed Single Data to Packed BF16 Data.
250 ///
251 /// \headerfile <x86intrin.h>
252 ///
253 /// This intrinsic corresponds to the <c> VCVTNEPS2BF16 </c> instructions.
254 ///
255 /// \param __A
256 ///    A 256-bit vector of [8 x float].
257 /// \param __U
258 ///    A 8-bit mask value specifying what is chosen for each element.
259 ///    A 1 means conversion of __A. A 0 means element is zero.
260 /// \returns A 128-bit vector of [8 x bfloat] comes from conversion of __A.
261 static __inline__ __m128bh __DEFAULT_FN_ATTRS256
262 _mm256_maskz_cvtneps_pbh(__mmask8 __U, __m256 __A) {
263   return (__m128bh)__builtin_ia32_cvtneps2bf16_256_mask((__v8sf)__A,
264                                                     (__v8hi)_mm_setzero_si128(),
265                                                     (__mmask8)__U);
266 }
267 
268 /// Dot Product of BF16 Pairs Accumulated into Packed Single Precision.
269 ///
270 /// \headerfile <x86intrin.h>
271 ///
272 /// This intrinsic corresponds to the <c> VDPBF16PS </c> instructions.
273 ///
274 /// \param __A
275 ///    A 128-bit vector of [8 x bfloat].
276 /// \param __B
277 ///    A 128-bit vector of [8 x bfloat].
278 /// \param __D
279 ///    A 128-bit vector of [4 x float].
280 /// \returns A 128-bit vector of [4 x float] comes from  Dot Product of
281 ///  __A, __B and __D
282 static __inline__ __m128 __DEFAULT_FN_ATTRS128
283 _mm_dpbf16_ps(__m128 __D, __m128bh __A, __m128bh __B) {
284   return (__m128)__builtin_ia32_dpbf16ps_128((__v4sf)__D,
285                                              (__v4si)__A,
286                                              (__v4si)__B);
287 }
288 
289 /// Dot Product of BF16 Pairs Accumulated into Packed Single Precision.
290 ///
291 /// \headerfile <x86intrin.h>
292 ///
293 /// This intrinsic corresponds to the <c> VDPBF16PS </c> instructions.
294 ///
295 /// \param __A
296 ///    A 128-bit vector of [8 x bfloat].
297 /// \param __B
298 ///    A 128-bit vector of [8 x bfloat].
299 /// \param __D
300 ///    A 128-bit vector of [4 x float].
301 /// \param __U
302 ///    A 8-bit mask value specifying what is chosen for each element.
303 ///    A 1 means __A and __B's dot product accumulated with __D. A 0 means __D.
304 /// \returns A 128-bit vector of [4 x float] comes from  Dot Product of
305 ///  __A, __B and __D
306 static __inline__ __m128 __DEFAULT_FN_ATTRS128
307 _mm_mask_dpbf16_ps(__m128 __D, __mmask8 __U, __m128bh __A, __m128bh __B) {
308   return (__m128)__builtin_ia32_selectps_128((__mmask8)__U,
309                                            (__v4sf)_mm_dpbf16_ps(__D, __A, __B),
310                                            (__v4sf)__D);
311 }
312 
313 /// Dot Product of BF16 Pairs Accumulated into Packed Single Precision.
314 ///
315 /// \headerfile <x86intrin.h>
316 ///
317 /// This intrinsic corresponds to the <c> VDPBF16PS </c> instructions.
318 ///
319 /// \param __A
320 ///    A 128-bit vector of [8 x bfloat].
321 /// \param __B
322 ///    A 128-bit vector of [8 x bfloat].
323 /// \param __D
324 ///    A 128-bit vector of [4 x float].
325 /// \param __U
326 ///    A 8-bit mask value specifying what is chosen for each element.
327 ///    A 1 means __A and __B's dot product accumulated with __D. A 0 means 0.
328 /// \returns A 128-bit vector of [4 x float] comes from  Dot Product of
329 ///  __A, __B and __D
330 static __inline__ __m128 __DEFAULT_FN_ATTRS128
331 _mm_maskz_dpbf16_ps(__mmask8 __U, __m128 __D, __m128bh __A, __m128bh __B) {
332   return (__m128)__builtin_ia32_selectps_128((__mmask8)__U,
333                                            (__v4sf)_mm_dpbf16_ps(__D, __A, __B),
334                                            (__v4sf)_mm_setzero_si128());
335 }
336 
337 /// Dot Product of BF16 Pairs Accumulated into Packed Single Precision.
338 ///
339 /// \headerfile <x86intrin.h>
340 ///
341 /// This intrinsic corresponds to the <c> VDPBF16PS </c> instructions.
342 ///
343 /// \param __A
344 ///    A 256-bit vector of [16 x bfloat].
345 /// \param __B
346 ///    A 256-bit vector of [16 x bfloat].
347 /// \param __D
348 ///    A 256-bit vector of [8 x float].
349 /// \returns A 256-bit vector of [8 x float] comes from  Dot Product of
350 ///  __A, __B and __D
351 static __inline__ __m256 __DEFAULT_FN_ATTRS256
352 _mm256_dpbf16_ps(__m256 __D, __m256bh __A, __m256bh __B) {
353   return (__m256)__builtin_ia32_dpbf16ps_256((__v8sf)__D,
354                                              (__v8si)__A,
355                                              (__v8si)__B);
356 }
357 
358 /// Dot Product of BF16 Pairs Accumulated into Packed Single Precision.
359 ///
360 /// \headerfile <x86intrin.h>
361 ///
362 /// This intrinsic corresponds to the <c> VDPBF16PS </c> instructions.
363 ///
364 /// \param __A
365 ///    A 256-bit vector of [16 x bfloat].
366 /// \param __B
367 ///    A 256-bit vector of [16 x bfloat].
368 /// \param __D
369 ///    A 256-bit vector of [8 x float].
370 /// \param __U
371 ///    A 16-bit mask value specifying what is chosen for each element.
372 ///    A 1 means __A and __B's dot product accumulated with __D. A 0 means __D.
373 /// \returns A 256-bit vector of [8 x float] comes from  Dot Product of
374 ///  __A, __B and __D
375 static __inline__ __m256 __DEFAULT_FN_ATTRS256
376 _mm256_mask_dpbf16_ps(__m256 __D, __mmask8 __U, __m256bh __A, __m256bh __B) {
377   return (__m256)__builtin_ia32_selectps_256((__mmask8)__U,
378                                         (__v8sf)_mm256_dpbf16_ps(__D, __A, __B),
379                                         (__v8sf)__D);
380 }
381 
382 /// Dot Product of BF16 Pairs Accumulated into Packed Single Precision.
383 ///
384 /// \headerfile <x86intrin.h>
385 ///
386 /// This intrinsic corresponds to the <c> VDPBF16PS </c> instructions.
387 ///
388 /// \param __A
389 ///    A 256-bit vector of [16 x bfloat].
390 /// \param __B
391 ///    A 256-bit vector of [16 x bfloat].
392 /// \param __D
393 ///    A 256-bit vector of [8 x float].
394 /// \param __U
395 ///    A 8-bit mask value specifying what is chosen for each element.
396 ///    A 1 means __A and __B's dot product accumulated with __D. A 0 means 0.
397 /// \returns A 256-bit vector of [8 x float] comes from  Dot Product of
398 ///  __A, __B and __D
399 static __inline__ __m256 __DEFAULT_FN_ATTRS256
400 _mm256_maskz_dpbf16_ps(__mmask8 __U, __m256 __D, __m256bh __A, __m256bh __B) {
401   return (__m256)__builtin_ia32_selectps_256((__mmask8)__U,
402                                         (__v8sf)_mm256_dpbf16_ps(__D, __A, __B),
403                                         (__v8sf)_mm256_setzero_si256());
404 }
405 
406 /// Convert One Single float Data to One BF16 Data.
407 ///
408 /// \headerfile <x86intrin.h>
409 ///
410 /// This intrinsic corresponds to the <c> VCVTNEPS2BF16 </c> instructions.
411 ///
412 /// \param __A
413 ///    A float data.
414 /// \returns A bf16 data whose sign field and exponent field keep unchanged,
415 ///    and fraction field is truncated to 7 bits.
416 static __inline__ __bfloat16 __DEFAULT_FN_ATTRS128 _mm_cvtness_sbh(float __A) {
417   __v4sf __V = {__A, 0, 0, 0};
418   __v8hi __R = __builtin_ia32_cvtneps2bf16_128_mask(
419       (__v4sf)__V, (__v8hi)_mm_undefined_si128(), (__mmask8)-1);
420   return (__bfloat16)__R[0];
421 }
422 
423 /// Convert Packed BF16 Data to Packed float Data.
424 ///
425 /// \headerfile <x86intrin.h>
426 ///
427 /// \param __A
428 ///    A 128-bit vector of [4 x bfloat].
429 /// \returns A 128-bit vector of [4 x float] come from conversion of __A
430 static __inline__ __m128 __DEFAULT_FN_ATTRS128 _mm_cvtpbh_ps(__m128bh __A) {
431   return _mm_castsi128_ps(
432       (__m128i)_mm_slli_epi32((__m128i)_mm_cvtepi16_epi32((__m128i)__A), 16));
433 }
434 
435 /// Convert Packed BF16 Data to Packed float Data.
436 ///
437 /// \headerfile <x86intrin.h>
438 ///
439 /// \param __A
440 ///    A 128-bit vector of [8 x bfloat].
441 /// \returns A 256-bit vector of [8 x float] come from conversion of __A
442 static __inline__ __m256 __DEFAULT_FN_ATTRS256 _mm256_cvtpbh_ps(__m128bh __A) {
443   return _mm256_castsi256_ps((__m256i)_mm256_slli_epi32(
444       (__m256i)_mm256_cvtepi16_epi32((__m128i)__A), 16));
445 }
446 
447 /// Convert Packed BF16 Data to Packed float Data using zeroing mask.
448 ///
449 /// \headerfile <x86intrin.h>
450 ///
451 /// \param __U
452 ///    A 4-bit mask. Elements are zeroed out when the corresponding mask
453 ///    bit is not set.
454 /// \param __A
455 ///    A 128-bit vector of [4 x bfloat].
456 /// \returns A 128-bit vector of [4 x float] come from conversion of __A
457 static __inline__ __m128 __DEFAULT_FN_ATTRS128
458 _mm_maskz_cvtpbh_ps(__mmask8 __U, __m128bh __A) {
459   return _mm_castsi128_ps((__m128i)_mm_slli_epi32(
460       (__m128i)_mm_maskz_cvtepi16_epi32((__mmask8)__U, (__m128i)__A), 16));
461 }
462 
463 /// Convert Packed BF16 Data to Packed float Data using zeroing mask.
464 ///
465 /// \headerfile <x86intrin.h>
466 ///
467 /// \param __U
468 ///    A 8-bit mask. Elements are zeroed out when the corresponding mask
469 ///    bit is not set.
470 /// \param __A
471 ///    A 128-bit vector of [8 x bfloat].
472 /// \returns A 256-bit vector of [8 x float] come from conversion of __A
473 static __inline__ __m256 __DEFAULT_FN_ATTRS256
474 _mm256_maskz_cvtpbh_ps(__mmask8 __U, __m128bh __A) {
475   return _mm256_castsi256_ps((__m256i)_mm256_slli_epi32(
476       (__m256i)_mm256_maskz_cvtepi16_epi32((__mmask8)__U, (__m128i)__A), 16));
477 }
478 
479 /// Convert Packed BF16 Data to Packed float Data using merging mask.
480 ///
481 /// \headerfile <x86intrin.h>
482 ///
483 /// \param __S
484 ///    A 128-bit vector of [4 x float]. Elements are copied from __S when
485 ///     the corresponding mask bit is not set.
486 /// \param __U
487 ///    A 4-bit mask. Elements are zeroed out when the corresponding mask
488 ///    bit is not set.
489 /// \param __A
490 ///    A 128-bit vector of [4 x bfloat].
491 /// \returns A 128-bit vector of [4 x float] come from conversion of __A
492 static __inline__ __m128 __DEFAULT_FN_ATTRS128
493 _mm_mask_cvtpbh_ps(__m128 __S, __mmask8 __U, __m128bh __A) {
494   return _mm_castsi128_ps((__m128i)_mm_mask_slli_epi32(
495       (__m128i)__S, (__mmask8)__U, (__m128i)_mm_cvtepi16_epi32((__m128i)__A),
496       16));
497 }
498 
499 /// Convert Packed BF16 Data to Packed float Data using merging mask.
500 ///
501 /// \headerfile <x86intrin.h>
502 ///
503 /// \param __S
504 ///    A 256-bit vector of [8 x float]. Elements are copied from __S when
505 ///     the corresponding mask bit is not set.
506 /// \param __U
507 ///    A 8-bit mask. Elements are zeroed out when the corresponding mask
508 ///    bit is not set.
509 /// \param __A
510 ///    A 128-bit vector of [8 x bfloat].
511 /// \returns A 256-bit vector of [8 x float] come from conversion of __A
512 static __inline__ __m256 __DEFAULT_FN_ATTRS256
513 _mm256_mask_cvtpbh_ps(__m256 __S, __mmask8 __U, __m128bh __A) {
514   return _mm256_castsi256_ps((__m256i)_mm256_mask_slli_epi32(
515       (__m256i)__S, (__mmask8)__U, (__m256i)_mm256_cvtepi16_epi32((__m128i)__A),
516       16));
517 }
518 
519 #undef __DEFAULT_FN_ATTRS128
520 #undef __DEFAULT_FN_ATTRS256
521 
522 #endif
523